Rotary power device



E. H. GOLHNGS ROTARY POWER DEVICE.

APPLICATION FILED SEPT. 19. 1918.

Patented Dec. 7, 1920.

3 SHEETSSHEET 1.

E. H. GOLLINGS.

ROTARY POWER DEVICE.

v APPLICATION FILED SEPT. 19. I918.

1,3619 Patented Dec; 7,1920.

\ SSHEETS-SHEET 2.

E. H. GOLLINGS.

ROTARY POWER DEVICE.

- APPLICATION FILED SEPT. 19. l9l8.

Patented Dec. 7,1920.

3 SHEETS-SHEET 3.-

UNITED STATES ELLICK H. GOLLINGS, OF CHICAGO, ILLINOIS.

ROTARY rowan. DEVICE.

Specification of Letters Patent.

Patented Dec. '7, 1920.

Application filed September 19, 1918. Serial No. 254,779.

I Rotary Power Devices; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification. 1

My invention has reference more particularly to a rotary power device which maybe used either as a pump or motor, and wherein an externally toothed member is mounted eccentrically in an internally toothed memher and both arranged to rotate and have the teeth thereofengage so as to form intake and discharge compartments and transfer fiuid from the former to the latter, and my invention has reference to a device of the character formin the subject matter of my application filed pril 22nd, 1918, Serial No. 230,094.

An object of my invention is to provide an improved rotary power device of this characterhaving resilient tips on the ends of the teeth to afford a convenient and inexpensive means to effect a tight joint and prevent leakage from one compartment to the other.

Another object of my invention is to provide a device of this character having an improved construction to eliminate wear and friction and permitting replacement of wearing parts between the side walls of the inner and outer rotors.

Another object of my invention is to provide a device of this character with auxiliary pockets or extensions from the compartments between the teeth to accommodate foreign matter that may be introduced into the device and prevent same from interfering with the efiicient operation of the device.

Another object of my invention is to provide improved means for oiling the bearing surfaces of the ,device. 1

Another object of my invention is to provide improved means for supporting and mounting the parts of the device to provide ample bearings which are placed so as to effectively support the device. v

My invention also has other important objects which will appear from the following specification and theaccompan ing drawmgs, m which I have describe and illustrated my invention "in a preferred form.

On the drawings: F gure 1 is a side view of a device embodying my invention.

F g. 2 is an end view thereof. F1g.'3 is-a sectional viewon the line 3--3 of Fig. 1. Fig. is a horizontal longitudinal sectional view on the line 44, of Fig. 1.

Flg. 5 is an enlarged sectional view on the l1ne 55 of Fig. 4.

F1g. 6 is an enlarged fragmentary sectional view on the line 66 of Fig. 5.

Fig. 7 is a view of the inner face of one of the side plates of the drum. i As shown on the drawings: Y

The reference numerals l and 2, indicate a pair of hollow shafts or pipes which are arranged in alinement and connected at their inner ends with a hollow cylinder or hub 3, which is arranged eccentrically with reference to the shafts 1 and 2, and. has a zigzag partition 4, dividing the interior of the hub 3, into two compartments, one of which,

indicated at 6 communicates with the hollow shaft 1, and the other of which, indicated at 5, communicates with the hollow shaft 2, and there is an arcuate opening 7, from the compartment 6 at one side of the hub, and a corresponding opening 8, from the'compartment 5, at the other sideof the hub.

Awheel 9, is mounted to rotate on the hub 3, and comprises a pair of side plates 10,

spaced apart so that the outer surfaces thereof are flush with the end faces of the hub 3, and connected together by means of a plurality of teeth 11, and cross partitions 12, as shown in Fig. 5, which partitions extend inwardly from the teeth to the central opening of the wheel so that the inner ends thereofengage against the periphery of the hub 3, and divide the wheel into a plurality of passages 13, which communicate with the openings 7 and 8, through the wall of the hub 3, and open outwardly into the spaces between the adjoining teeth 11, so that fluid may be supplied from the interior of the hub 3, out through one of thelopenings to the space between the teeth 11, and may also be passed in the reverse direction from the space between the teeth inwardly through the other opening to the interior of the hub 3. The outer end of each tooth 11, is provided with a transverse groove or socket 14,

serve to impart power to the device when it it used as a pump and to transmit power therefrom when it is used as a motor. Each of the plates 17, has a hubextension 20, on the outer face embracing the respective hollow shaft 1 or 2, and rotatable thereon, and as the wheel 9, is mounted upon the hub 3, and the hub is eccentrically arranged with reference to the shafts 1 and 2, the casing l718, is therefore eccentrically arran ed with respect to the wheel 9, as shown in ig. 5, a plurality of teeth 21, are mounted on the inner face of the annular ring 18, to cooperate with the teeth 11, of the wheel 9, to afford intake and discharge compartments within the casing 18. The number of teeth 21, exceeds the number of teeth on the wheel 9, and the teeth 21, project inwardly a suitable distance so that the teeth 11, of the wheel 9, at one side of the ring 18, entirely mesh with the teeth 21, thereon and at the opposite side are withdrawn from the meshing engagement therewith and have a sliding engagement with the tips thereof to afford the lost motion necessitated by the dif ference in the number of teeth on the wheel 9, and the ring 18. I

The teeth 21, are hollow and formed with a wall at each end through which the bolts 22, are passed to hold the teeth in place and also to combine. the ring 18, and the end plate 17, and there is a lateral flange .23, at the base of eachytooth engaging. the inner surface of the ring 18, to hold the tooth in upright position and serve as an abutment to be engaged by the outer ends of the teeth of .the wheel 9, when the teeth are entirely meshed, and the flanges 23, of the adjoining teeth are separated to provide a pocket or recess 24, therebetween for sand or other foreign matter which may pass'through the device and prevent impairing the operation of the device.

In practlce it has been found that the I wheel 9, is caused to bear with a greater pressure against one of the side walls 17, than the other and offers a considerable degree of frictional resistance as well as opportunlty for wear, and in order to eliminate the friction and provide for re lacement in case. of wear I have provi ed a sp1der 2 5, on the inner face of each plate 17 comprising a central ring 26, encircling the shafts 1 or 2, respectively, and having'a plurality of arms 27, radiating therefrom, the outer ends of each of which project under the inner end of one of the teeth 21, so that there is a. flat strip 27, extending inwardly from each tooth 21. The spider 25, is held in the proper position by the engagement of the ends of the arms under the teeth 21, and displacement is further avoided by pins 28, which are passed through the arms 27, and engage in the wall of the plates 17.

For supporting the device there is a stand ard 29, at each side of the casing 18, and in close proximity thereto, which has a semicircular bearing 30, at the upper end, which engages a wide annular groove 31, in the hub 20, and there is also a standard 32, at the outer end of each of the shafts 1 and 2, and formed of two half sections with clamp members 33, at the upper end adapted to be drawn into tight engagement with the shafts 1 and 2, by means of the bolts 34, so as to hold the shafts 1 and 2, and the hub 3, in a stationary position.

Each hub 20, beyond the bearing 30, is bored out to a larger internal diameter to provide a chamber for packing 35, and there is an annular flange 36, at the outer end of each hub. A packing bushing 37, is inserted in the enlarged opening of the hub against the packing 35, and is held in place and adjusted against the packing by means of the bolts 38, which are passed through a flange 39, of the bushing and have a threaded engagement with the flange 36, of the hub.

For oiling the bearing surfaces of the devicethere is a pipe 40, extending inwardly through each hollow shaft 1 and 2, and provided with a lateral branch 41, extending out through the wall of the hollow shaft at the point where same is engaged by the hub 20, and at the inner end of each pipe 40, is an upright branch 42, projecting through the wall of the hub 3, where the wheel 9, is journaled thereon. The extensions-42, extend upwardly instead of laterally so that the outlets therefrom are intermediate of theintake side and the discharge side of the device so that the lubricant will flow naturally out through the pipe 42, without the influence of the suction or compression. The outer ends of the pipes 40, are connected with a laterally extending branch 43, which may project through the wall of the hollow shafts 1 or 2, the bearing 33, thereof and the outer ends are provided with some suitable means for providing lubricant to the bear ing surfaces.

The operation is as follows:

The eccentric arrangement of the wheel 9, and the casing 18, and the cooperation of the teeth thereof divides the casing 18, diametrically into an intake chamber at one side and a discharge chamber at the other side, and the engagement of the teeth effects a transfer of fluid from the one side to the other so that the device may operate as a pump to transfer fluid from one place to another, or may be used as a motor by ap-- plfying fluid under pressure to the device.

hen used as a pump fluid is drawn in through the hollow shaft 2, into the compartment 5, of the hub 3, and the enlargement of the chamber at the intake or suction side of the device draws the fluid out from the compartment 5, through the passageways 13, into the spaces between the teeth 11 and 21. As the tips of the teeth 11 and 21, engage at the top of the device a quantity of fluid is pocketed between a pair of adjoining teeth 21, of the casing and a pair of adj oin- 1 ing teeth 11, of the wheel and carried over to the other side of the device and forced out through the openings 13, into the compartment 6, and from there out through the pipe 1.

An effective engagement of the ends of the teeth 11, with the tips of the teeth'21, and also with the flanges 23, is insured by reason of the resilient caps 16, with which each of the teeth 11, is provided and when the teeth 11, are in engagement-with the bottom ofthe pockets between the teeth 21, a space 24, is provided therebelow to accommodate any sand or, foreign material that may be pass ing through the device, such material when taken in being. thrown outwardly by centrifugal force into the space24, and at the discharge side being removed therefrom by the outflow of the fluid.

The bearings 29, are arranged close against'the plates 17, so as to effectively support the device and take the weight of the casing 18, from the shafts 1 and 2, and are adapted to support the device when it is desired to remove the standards 32, to permit repacking of the joint between the hub It will be noted that by using the spider 25, on the inner face of each plate 17 the frictional engagement of the wheel 9, is greatly reduced and an effective separation of the intakeand discharge sides of the device is maintained by the arrangement of the ribs 27, to extend inwardly from each tooth 21, and in case of excessive wear the spider 25, may be readily replaced at a small cost.

While I have shown and described my invention in a preferred form, I am aware that various changes and modifications may be made therein without departing from the principles of mv invention, and I therefore do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention: I

1. In a rotary power device the combination of a casing having a plurality of internally projecting teeth, a rotary member mounted eccentrically in the casing and compartment and a discharge compartmentand to effect a transfer of fluid from one compartment to the other, the said internal teeth of the casing being provided with shoulders therebetween adapted to be engaged by the tips of the teeth of the rotary member and having a pocket formed between the shoulders to form a chamber beyond the outer end of the tooth of the rotary member when said tooth isengaged against the shoulders of the adjoining teeth of the casing.

2. In a rotary power device the combination of a casing having internal teeth, a rotary member mounted eccentrically in the casing and provided with a less number of teeth than the casing and projecting radially therefrom so as to cooperate with the teeth of the casing to divide the casing into an intake compartment and a1 discharge compartment and to effect a transfer of fluid from one compartment to the other, and a spider at each side of the casing between the side wall thereof and the side wall of the rotary member having an arm extending radially outward to each internal tooth.

3. In a rotary power device the combination of a casing having internal teeth, a

hollow hub eccentrically arranged in the pipe for lubricating material extending inwardly through one of the pipes which communicates with the drum, said pipe for lubricating material having an outlet for lubricating-the said bearing and an outlet for lubricating the surface of the hub upon which the rotary member is mounted.

4. In a rotary power member the combination of a casing having a plurality of internal teeth, a hub arranged eccentrically therein and having an inlet pipe and an outlet pipe extending therefrom and positioned concentrically of the casing, a hub on the casing at each side thereon encircling the pipe leading from the hub, 'a ro-' tary member mounted on the hub and providedwith a less number of teeth than the casing and projecting radially therefrom so partment and a discharge compartment and In testimony whereof I have hereunto effect a transfer of fluid from one compartsubscribed my name in the presence of two 10 ment' to the othlenbmeans fpr stationarily subscribing witnesses.

supporting the 111 and in et and outlet 7 w pipes therefrom, and means adjacent the ELLICIX (IOLLINGS' casing for rotatably supporting the casing Witnesses:

independently of the hub and pipes there- EARL M. HARDINE,

from. CHARLES W. HILLs, Jr. 

